a lengthy four-lane strip that leads into one of the expressways. It runs near the river more frequently in the southern areas, but it is never very far inland. New York City The concurrency between US 1 and US 9 that began in New Jersey ends at the first exit from I-95 on the George Washington Bridge, when US 9 heads north via 178th and 179th streets to Broadway. Broadway passes through the Washington Heights neighborhood and then into Inwood, the northernmost neighborhood on the island. The region in which US 9 passes through has a large Latino immigrant population. The northernmost section of the New York City Subway's underground IND Eighth Avenue Line ( train) runs along Broadway between Dyckman Street and the Inwood–207th Street terminal. On the corner of 204th Street is the Dyckman House, the only original farmhouse left in Manhattan and a National Historic Landmark. Near the island's northern tip, at the intersection with 215th Street, the elevated IRT Broadway–Seventh Avenue Line ( train) of the New York City Subway joins Broadway. At the very tip of Manhattan, just past Columbia University's Lawrence A. Wien Stadium, US 9 crosses the Harlem River Ship Canal via the Broadway Bridge, into Marble Hill, the only portion of Manhattan on the mainland. The Marble Hill Metro-North station here is the first of several along US 9. At or just south of 230th Street, US 9, still Broadway, enters the Bronx. It draws alongside I-87, here the Major Deegan Expressway, the first of many encounters between the two roads on their northward course. At the 242nd Street station, the subway ends and Broadway runs along the west side of Van Cortlandt Park. The Henry Hudson Parkway interchange a mile up this stretch adds NY 9A to US 9. Westchester County The northwestern corner of the park marks the city limit and US 9 enters Yonkers, where it is now known as South Broadway. It trends closer to the Hudson River, remaining a busy urban commercial street. In downtown Yonkers, it drops close to the river, becomes North Broadway and NY 9A leaves via Ashburton Avenue. US 9 climbs to the nearby ridgetop runs parallel to the river and the railroad, a few blocks east of both as it passes St. John's Riverside Hospital. The neighborhoods become more residential and the road gently undulates along the ridgetop. In Yonkers, US 9